keyspace has effectively one shard. Vitess names the shard 0 by convention. When sharded, a keyspace has N shards with non-overlapping data. Shard Naming Shard names have the following characteristics: • transaction is committed). • MySQL has multiple options for auto-increment, like only using every N number (for multi-master configurations), or performance related features (locking that table’s current performance, we also support block allocation of IDs: each update to the MySQL table is only done every N IDs (N being configurable), and in between only memory structures in vttablet are updated, making the QPS

single shard. Vitess names the shard 0 (or sometimes -) by convention. When sharded, a keyspace has N shards with non-overlapping data. The number of shards in a keyspace can vary depending on the use-case 'x.txt' FIELDS TERMINATED BY ';' OPTIONALLY ENCLOSED BY '"' ESCAPED BY '\t' LINES TERMINATED BY '\ n' For sharded keyspaces this statement can still be used but only after specifying the exact shard with FIELDS TERMINATED BY ';' OPTIONALLY ENCLOSED BY '"' ESCAPED BY '\t' LINES TERMINATED BY '\ n' For sharded keyspaces this statement can still be used but only after specifying the exact shard with

keyspace has effectively one shard. Vitess names the shard 0 by convention. When sharded, a keyspace has N shards with non-overlapping data. Shard Naming Shard names have the following characteristics: • transaction is committed). • MySQL has multiple options for auto-increment, like only using every N number (for multi-master configurations), or performance related features (locking that table’s current performance, we also support block allocation of IDs: each update to the MySQL table is only done every N IDs (N being configurable), and in between only memory structures in vttablet are updated, making the QPS

single shard. Vitess names the shard 0 (or sometimes -) by convention. When sharded, a keyspace has N shards with non-overlapping data. The number of shards in a keyspace can vary depending on the use-case transaction is committed). • MySQL has multiple options for auto-increment, like only using every N number (for multi-master configurations), or performance related features (locking that table’s current performance, we also support block allocation of IDs: each update to the MySQL table is only done every N IDs (N being configurable), and in between only memory structures in vttablet are updated, making the QPS

keyspace has effectively one shard. Vitess names the shard 0 by convention. When sharded, a keyspace has N shards with non-overlapping data. Shard Naming Shard names have the following characteristics: • transaction is committed). • MySQL has multiple options for auto-increment, like only using every N number (for multi-master configurations), or performance related features (locking that table’s current performance, we also support block allocation of IDs: each update to the MySQL table is only done every N IDs (N being configurable), and in between only memory structures in vttablet are updated, making the QPS

single shard. Vitess names the shard 0 (or sometimes -) by convention. When sharded, a keyspace has N shards with non-overlapping data. The number of shards in a keyspace can vary depending on the use-case 'x.txt' FIELDS TERMINATED BY ';' OPTIONALLY ENCLOSED BY '"' ESCAPED BY '\t' LINES TERMINATED BY '\ n' For sharded keyspaces this statement can still be used but only after specifying the exact shard with FIELDS TERMINATED BY ';' OPTIONALLY ENCLOSED BY '"' ESCAPED BY '\t' LINES TERMINATED BY '\ n' For sharded keyspaces this statement can still be used but only after specifying the exact shard with

Sprintf("Uid: %v
\nSource: %v/%v
\n", source.Uid, source.Keyspace, source.Shard) if key.KeyRangeIsPartial(source.KeyRange) { result += fmt.Sprintf("KeyRange: %v-%v
\n", hex.EncodeToString(source EncodeToString(source.KeyRange.End)) } if len(source.Tables) > 0 { result += fmt.Sprintf("Tables: %v
\n", strings.Join(source.Tables, " ")) } return template.HTML(result) } https://github.com/vitessi

foreseeable future.” Michael Demmer, Principal Engineer, Slack 17 VITESS.IO Architecture shard n shard 1 vtgate app server app server app server mysqld vttablet master vtgate big data Vitess Rollups Reshardi ng Backfilling of Lookup vindexes Schema deploym ent Data Migratio n Change Notificatio n 47 VITESS.IO vitess.io What’s Next Do the tutorial Join Vitess Slack Bring up

keyspace has effectively one shard. Vitess names the shard 0 by convention. When sharded, a keyspace has N shards with non-overlapping data. Shard Naming Shard names have the following characteristics: • transaction is committed). • MySQL has multiple options for auto-increment, like only using every N number (for multi-master configurations), or performance related features (locking that table’s current performance, we also support block allocation of IDs: each update to the MySQL table is only done every N IDs (N being configurable), and in between only memory structures in vttablet are updated, making the QPS

keyspace has effectively one shard. Vitess names the shard 0 by convention. When sharded, a keyspace has N shards with non-overlapping data. Resharding Vitess supports dynamic resharding, in which the number Vitess can use to generate monotonically increasing ids. The syntax to generate an id is: select next :n values from customer_seq. The vttablet that exposes this table is capable of serving a very large number transaction is committed). • MySQL has multiple options for auto-increment, like only using every N number (for multi-master configurations), or performance related features (locking that table’s current